I bought a Delta radial arm saw 33-830 about 5 years ago and used it for a couple months in my dads shop then put it in storage. My wife and I are building a house and I am building the cabinets and doing the trim work. I got it out of storage and put a new blade on it and fired it up, it started and ran for about 10-15 seconds then it started smoking. I shut it off took off the blade and the plastic motor covers and turned it back on, the blade wouldn’t move and the motor wouldn’t turn and the motor just hummed. I grabbed the spindle and spun it by hand and then it started working. It ran for about 20-30 seconds and them started smoking again and tripped the on board circuit and then I gave up and thought I would ask you all about it. I am assuming the start capacitor is not working but what else do you all thank it is?

I thought it might be the brake but I am not sure how to disengage the brake. I thought the brake was suppose to engage and disengage automatically. Is there anyway to check the brake, I can spin the blade and it spins?

The start and/or run capacitors may have dried out and gone bad. Not certain if that saw has one or two capacitors. If you have a manual, it will probably tell you. Sounds like the brake is not engaged, if you can spin the blade.

Thank you for the link, I do not have the manual it is in dad shop with all his manuals. It has two capacitors, a start and a run capacitor. When I spin the blade it doesn’t spin as freely as I think it should. It feels like there is some grease or old oil gummed up on the shaft, but it could be the brake. I let the motor run even tho it was smoking thinking the old gummed up oil from it sitting for a few years, that is when it tripped the circuit on the saw.

centrifugal switch stuck. it keeps the start winding engaged until the motor reaches a certain speed and drops them out. if it stays engaged the motor fights itself. take the back cover off the motor and give it a soaking with your favorite penetrating oil and carefully, manually check the operation of the switch.

Could be the brake as suspected. Sometimes the lube in the motor bearings will harden and make things difficult to turn. When a motor is in storage, it is good to start them a couple times a year and let them run until warmed up. I have seen this in some routers then others seem to be fine by being in storage for years. Never know which one though.

I had an old craftsman radial arm. If dirt got in the centrifugal starting switch, the saw wouldn’t start. If I spun the arbor then it would run, however, it didn’t over heat or pop the reset. Maybe you have more than one problem?

Based on my experience your motor is giving up the ghost. Dying, burning out. It’s kaput. However I’ll wait to see if anyone offers advice that helps short of replacing the motor. I have an old 3 hp motor lying around that made it’s last puff I would love to resurrect.

can you take off covers between the blade and the motor I.e arm covers and such.may be clogged with saw dust,mouse nest,dapper wasp nest.maybe harden grease or lack of.you can take out the motor and take it to a shop and have the winding etc done for under 100.may just be brushes or a ground wire or dry bearings.

I do have the cover and blade off, there aren’t any nests that I have found. When I had the covers off I looked at every wire thinking the smoke was just from a bad wire since that is what it smelt like. I didn’t find any burnt or blackened wires or any connections burnt at all. There could be a wire burnt inside the motor itself that I couldn’t see tho. Removing the motor and taking it in is the next step I think. I just figured I would get on here and see if anyone could think of something so I don’t have to tae it in.